am c989950d: CalendarView rendering: use R.styleable to find attr. [DO NOT MERGE] (87f5fd6b) · Commits · e / os / android_frameworks_base

tools/layoutlib/bridge/src/com/android/layoutlib/bridge/Bridge.java

+123 −19

Original line number	Diff line number	Diff line
		@@ -54,6 +54,7 @@ import java.lang.ref.SoftReference;
		import java.lang.reflect.Field;
		import java.lang.reflect.Modifier;
		import java.util.Arrays;
		import java.util.Comparator;
		import java.util.EnumMap;
		import java.util.EnumSet;
		import java.util.HashMap;
		@@ -92,7 +93,7 @@ public final class Bridge extends com.android.ide.common.rendering.api.Bridge {
		/**
		* Same as sRMap except for int[] instead of int resources. This is for android.R only.
		*/
		private final static Map<IntArray, String> sRArrayMap = new HashMap<IntArray, String>();
		private final static Map<IntArray, String> sRArrayMap = new HashMap<IntArray, String>(384);
		/**
		* Reverse map compared to sRMap, resource type -> (resource name -> id).
		* This is for com.android.internal.R.
		@@ -248,37 +249,56 @@ public final class Bridge extends com.android.ide.common.rendering.api.Bridge {
		// the internal version), and put the content in the maps.
		try {
		Class<?> r = com.android.internal.R.class;
		// Parse the styleable class first, since it may contribute to attr values.
		parseStyleable();

		for (Class<?> inner : r.getDeclaredClasses()) {
		if (inner == com.android.internal.R.styleable.class) {
		// Already handled the styleable case. Not skipping attr, as there may be attrs
		// that are not referenced from styleables.
		continue;
		}
		String resTypeName = inner.getSimpleName();
		ResourceType resType = ResourceType.getEnum(resTypeName);
		if (resType != null) {
		Map<String, Integer> fullMap = new HashMap<String, Integer>();
		Map<String, Integer> fullMap = null;
		switch (resType) {
		case ATTR:
		fullMap = sRevRMap.get(ResourceType.ATTR);
		break;
		case STRING:
		case STYLE:
		// Slightly less than thousand entries in each.
		fullMap = new HashMap<String, Integer>(1280);
		// no break.
		default:
		if (fullMap == null) {
		fullMap = new HashMap<String, Integer>();
		}
		sRevRMap.put(resType, fullMap);
		}

		for (Field f : inner.getDeclaredFields()) {
		// only process static final fields. Since the final attribute may have
		// been altered by layoutlib_create, we only check static
		int modifiers = f.getModifiers();
		if (Modifier.isStatic(modifiers)) {
		if (!isValidRField(f)) {
		continue;
		}
		Class<?> type = f.getType();
		if (type.isArray() && type.getComponentType() == int.class) {
		if (type.isArray()) {
		// if the object is an int[] we put it in sRArrayMap using an IntArray
		// wrapper that properly implements equals and hashcode for the array
		// objects, as required by the map contract.
		sRArrayMap.put(new IntArray((int[]) f.get(null)), f.getName());
		} else if (type == int.class) {
		} else {
		Integer value = (Integer) f.get(null);
		sRMap.put(value, Pair.of(resType, f.getName()));
		fullMap.put(f.getName(), value);
		} else {
		assert false;
		}
		}
		}
		}
		}
		} catch (Throwable throwable) {
		} catch (Exception throwable) {
		if (log != null) {
		log.error(LayoutLog.TAG_BROKEN,
		"Failed to load com.android.internal.R from the layout library jar",
		@@ -290,6 +310,90 @@ public final class Bridge extends com.android.ide.common.rendering.api.Bridge {
		return true;
		}

		/**
		* Tests if the field is pubic, static and one of int or int[].
		*/
		private static boolean isValidRField(Field field) {
		int modifiers = field.getModifiers();
		boolean isAcceptable = Modifier.isPublic(modifiers) && Modifier.isStatic(modifiers);
		Class<?> type = field.getType();
		return isAcceptable && type == int.class \|\|
		(type.isArray() && type.getComponentType() == int.class);

		}

		private static void parseStyleable() throws Exception {
		// R.attr doesn't contain all the needed values. There are too many resources in the
		// framework for all to be in the R class. Only the ones specified manually in
		// res/values/symbols.xml are put in R class. Since, we need to create a map of all attr
		// values, we try and find them from the styleables.

		// There were 1500 elements in this map at M timeframe.
		Map<String, Integer> revRAttrMap = new HashMap<String, Integer>(2048);
		sRevRMap.put(ResourceType.ATTR, revRAttrMap);
		// There were 2000 elements in this map at M timeframe.
		Map<String, Integer> revRStyleableMap = new HashMap<String, Integer>(3072);
		sRevRMap.put(ResourceType.STYLEABLE, revRStyleableMap);
		Class<?> c = com.android.internal.R.styleable.class;
		Field[] fields = c.getDeclaredFields();
		// Sort the fields to bring all arrays to the beginning, so that indices into the array are
		// able to refer back to the arrays (i.e. no forward references).
		Arrays.sort(fields, new Comparator<Field>() {
		@Override
		public int compare(Field o1, Field o2) {
		if (o1 == o2) {
		return 0;
		}
		Class<?> t1 = o1.getType();
		Class<?> t2 = o2.getType();
		if (t1.isArray() && !t2.isArray()) {
		return -1;
		} else if (t2.isArray() && !t1.isArray()) {
		return 1;
		}
		return o1.getName().compareTo(o2.getName());
		}
		});
		Map<String, int[]> styleables = new HashMap<String, int[]>();
		for (Field field : fields) {
		if (!isValidRField(field)) {
		// Only consider public static fields that are int or int[].
		// Don't check the final flag as it may have been modified by layoutlib_create.
		continue;
		}
		String name = field.getName();
		if (field.getType().isArray()) {
		int[] styleableValue = (int[]) field.get(null);
		sRArrayMap.put(new IntArray(styleableValue), name);
		styleables.put(name, styleableValue);
		continue;
		}
		// Not an array.
		String arrayName = name;
		int[] arrayValue = null;
		int index;
		while ((index = arrayName.lastIndexOf('_')) >= 0) {
		// Find the name of the corresponding styleable.
		// Search in reverse order so that attrs like LinearLayout_Layout_layout_gravity
		// are mapped to LinearLayout_Layout and not to LinearLayout.
		arrayName = arrayName.substring(0, index);
		arrayValue = styleables.get(arrayName);
		if (arrayValue != null) {
		break;
		}
		}
		index = (Integer) field.get(null);
		if (arrayValue != null) {
		String attrName = name.substring(arrayName.length() + 1);
		int attrValue = arrayValue[index];
		sRMap.put(attrValue, Pair.of(ResourceType.ATTR, attrName));
		revRAttrMap.put(attrName, attrValue);
		}
		sRMap.put(index, Pair.of(ResourceType.STYLEABLE, name));
		revRStyleableMap.put(name, index);
		}
		}

		@Override
		public boolean dispose() {
		BridgeAssetManager.clearSystem();